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<a name="beast.ref.boost__beast__ssl_stream.async_write_some"></a><a class="link" href="async_write_some.html" title="ssl_stream::async_write_some">ssl_stream::async_write_some</a>
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<p>
          <a class="indexterm" name="idm44861266625616"></a>
        </p>
<p>
          Start an asynchronous write.
        </p>
<h6>
<a name="beast.ref.boost__beast__ssl_stream.async_write_some.h0"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__ssl_stream.async_write_some.synopsis"></a></span><a class="link" href="async_write_some.html#beast.ref.boost__beast__ssl_stream.async_write_some.synopsis">Synopsis</a>
        </h6>
<pre class="programlisting"><span class="keyword">template</span><span class="special">&lt;</span>
    <span class="keyword">class</span> <a href="../../../../../../../doc/html/boost_asio/reference/ConstBufferSequence.html" target="_top"><span class="emphasis"><em>ConstBufferSequence</em></span></a><span class="special">,</span>
    <span class="keyword">class</span> <a href="../../../../../../../doc/html/boost_asio/reference/WriteHandler.html" target="_top"><span class="emphasis"><em>WriteHandler</em></span></a><span class="special">&gt;</span>
<a href="../../../../../../../doc/html/boost_asio/reference/asynchronous_operations.html#boost_asio.reference.asynchronous_operations.automatic_deduction_of_initiating_function_return_type" target="_top"><span class="emphasis"><em>DEDUCED</em></span></a>
<span class="identifier">async_write_some</span><span class="special">(</span>
    <span class="identifier">ConstBufferSequence</span> <span class="keyword">const</span><span class="special">&amp;</span> <span class="identifier">buffers</span><span class="special">,</span>
    <span class="identifier">BOOST_ASIO_MOVE_ARG</span><span class="special">(</span><span class="identifier">WriteHandler</span><span class="special">)</span> <span class="identifier">handler</span><span class="special">);</span>
</pre>
<h6>
<a name="beast.ref.boost__beast__ssl_stream.async_write_some.h1"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__ssl_stream.async_write_some.description"></a></span><a class="link" href="async_write_some.html#beast.ref.boost__beast__ssl_stream.async_write_some.description">Description</a>
        </h6>
<p>
          This function is used to asynchronously write one or more bytes of data
          to the stream. The function call always returns immediately.
        </p>
<h6>
<a name="beast.ref.boost__beast__ssl_stream.async_write_some.h2"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__ssl_stream.async_write_some.parameters"></a></span><a class="link" href="async_write_some.html#beast.ref.boost__beast__ssl_stream.async_write_some.parameters">Parameters</a>
        </h6>
<div class="informaltable"><table class="table">
<colgroup>
<col>
<col>
</colgroup>
<thead><tr>
<th>
                  <p>
                    Name
                  </p>
                </th>
<th>
                  <p>
                    Description
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">buffers</span></code>
                  </p>
                </td>
<td>
                  <p>
                    The data to be written to the stream. Although the buffers object
                    may be copied as necessary, ownership of the underlying buffers
                    is retained by the caller, which must guarantee that they remain
                    valid until the handler is called.
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">handler</span></code>
                  </p>
                </td>
<td>
                  <p>
                    The handler to be called when the write operation completes.
                    Copies will be made of the handler as required. The equivalent
                    function signature of the handler must be:
                  </p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"> <span class="keyword">void</span> <span class="identifier">handler</span><span class="special">(</span>
  <span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">system</span><span class="special">::</span><span class="identifier">error_code</span><span class="special">&amp;</span> <span class="identifier">error</span><span class="special">,</span> <span class="comment">// Result of operation.</span>
  <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">bytes_transferred</span>           <span class="comment">// Number of bytes written.</span>
<span class="special">);</span>
</pre>
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<h6>
<a name="beast.ref.boost__beast__ssl_stream.async_write_some.h3"></a>
          <span class="phrase"><a name="beast.ref.boost__beast__ssl_stream.async_write_some.remarks"></a></span><a class="link" href="async_write_some.html#beast.ref.boost__beast__ssl_stream.async_write_some.remarks">Remarks</a>
        </h6>
<p>
          The <code class="computeroutput"><span class="identifier">async_write_some</span></code> operation
          may not transmit all of the data to the peer. Consider using the <code class="computeroutput"><span class="identifier">net</span><span class="special">::</span><span class="identifier">async_write</span></code> function if you need to ensure
          that all data is written before the asynchronous operation completes.
        </p>
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<td align="right"><div class="copyright-footer">Copyright © 2016-2019 Vinnie
      Falco<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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